def get_query(background_tasks: BackgroundTasks, q: str | None = None):
    if q:
        message = f"found query: {q}\n"
        background_tasks.add_task(write_log, message)
    return q


@app.post("/send-notification/{email}")
async def send_notification(
    email: str, background_tasks: BackgroundTasks, q: Annotated[str, Depends(get_query)]
):
    message = f"message to {email}\n"

	public fun connectionAcquired (Lokhttp3/Call;Lokhttp3/Connection;)V
	public fun connectionReleased (Lokhttp3/Call;Lokhttp3/Connection;)V
	public fun dnsEnd (Lokhttp3/Call;Ljava/lang/String;Ljava/util/List;)V
	public fun dnsStart (Lokhttp3/Call;Ljava/lang/String;)V
	public fun proxySelectEnd (Lokhttp3/Call;Lokhttp3/HttpUrl;Ljava/util/List;)V

        array[getNumElements()]);
    // array[getNumElements() + 1] might or might not have been nulled
  }

  @CollectionSize.Require(absent = ZERO)
  public void testToArray_emptyArrayOfWrongTypeForNonEmptyCollection() {
    assertThrows(
        ArrayStoreException.class,
        () -> {
          WrongType[] array = new WrongType[0];

	err := target.checkAndInitClient(ctx)
	if err != nil {
		return err
	}

	err = target.send(eventData)
	if xnet.IsNetworkOrHostDown(err, false) {
		return store.ErrNotConnected
	}
	return err
}

// send - sends the event to the target.
func (target *ElasticsearchTarget) send(eventData event.Event) error {
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()

                Smb2IoctlResponse resp = th.send(req, RequestParam.NO_RETRY);
                return ((SrvPipePeekResponse)resp.getOutputData()).getReadDataAvailable();
            }
            TransPeekNamedPipe req = new TransPeekNamedPipe(th.getConfig(), this.handle.getUncPath(), fd.getFid());
            TransPeekNamedPipeResponse resp = new TransPeekNamedPipeResponse(th.getConfig());
            th.send(req, resp, RequestParam.NO_RETRY);

///

```Python hl_lines="10"
{!> ../../docs_src/request_form_models/tutorial002.py!}
```

////

If a client tries to send some extra data, they will receive an **error** response.

For example, if the client tries to send the form fields:

* `username`: `Rick`
* `password`: `Portal Gun`
* `extra`: `Mr. Poopybutthole`

def get_query(background_tasks: BackgroundTasks, q: Union[str, None] = None):
    if q:
        message = f"found query: {q}\n"
        background_tasks.add_task(write_log, message)
    return q


@app.post("/send-notification/{email}")
async def send_notification(
    email: str, background_tasks: BackgroundTasks, q: Annotated[str, Depends(get_query)]
):
    message = f"message to {email}\n"

def get_query(background_tasks: BackgroundTasks, q: Union[str, None] = None):
    if q:
        message = f"found query: {q}\n"
        background_tasks.add_task(write_log, message)
    return q


@app.post("/send-notification/{email}")
async def send_notification(
    email: str, background_tasks: BackgroundTasks, q: Annotated[str, Depends(get_query)]
):
    message = f"message to {email}\n"

                    Smb2SetInfoRequest treq = new Smb2SetInfoRequest(th.getConfig(), fh.getFileId());
                    treq.setFileInformation(new FileEndOfFileInformation(0));
                    th.send(treq, RequestParam.NO_RETRY);
                }
            }
        }
        catch ( CIFSException e ) {
            throw SmbException.wrap(e);
        }
    }

The user of your API (an external developer) will create an invoice in your API with a POST request.

Then your API will (let's imagine):

* Send the invoice to some customer of the external developer.
* Collect the money.
* Send a notification back to the API user (the external developer).